"As people began to see how pollution and industry could damage the environment, they began to seek change. Environmental Protests explores the research that revealed how common practices harmed the environment, the events people held to raise awareness, and the tactics protesters use to protect nature and change laws."--Amazon.com.

While waiting to leave Mars before it burns up just like the Earth before it, Liam and his friend Phoebe discover some facts about time and space and realize that the human race is just one of the races trying to survive in space.

The Blythes are a big, warm, rambunctious family who live on a small farm and sometimes foster children. Now Prez has come to live with them. But, though he seems cheerful and helpful, he never says a word. Then one day Prez answers the door to someone claiming to be his relative. This small, loud stranger carries a backpack, walks with a swagger and goes by the name of Sputnik. As Prez dithers on the doorstep, Sputnik strolls right past him and introduces...

Siblings Evan and Jessie must solve the mystery of a missing cherished family treasure while coming to terms with their beloved grandmother's unsettling behavior.

"This title explores the relationship between Earth and the Sun. Readers will learn how and why Earth orbits the Sun, as well as the materials that make up the Sun. Readers will find answers to questions such as 'Do other planets have nights and days?' and 'Where do stars go in the daytime?' Easy-to-understand diagrams and text explain these quite complex scientific points in an age-appropriate and dynamic way. Hands-on science projects allow readers...

On his first day at Brooklyn's P.S. 858, fifth-grader Michael K. is teamed with two very strange students, and while he gradually comes to believe they are aliens who need his help, he has trouble convincing anyone else of the truth.

"Asteroids come in all shapes and sizes--and hit our planet in them, too. But what happens if a catastrophically large one approaches earth? By looking on the ground at historical asteroid craters and present-day falls, and up into space for the big ones yet to come, a wide variety of scientists are trying to figure out how to track asteroids--and how to avoid devastating impacts in the future."--

"Yared has traveled a long way to find his place in the universe. Light years, even. Though the battle of Addis Prime is over, the spacefaring Axum Empire is still fractured. The kingdom once gave their technology away free of charge, to better humankind. Now, having been missing for over a decade, they're returning to the planet where their galaxy-spanning civilization began--Earth. But they find the planet in disarray. Old Earth's atmosphere is...

Eleven-year-old orphan Tommy Learner's world in 1900 New York City collides with that of twelve-year-old, modern-day Jezebel Lemon in the basement of her apartment building, where together they must use the portals between worlds to thwart the Dead Gentleman, a legendary villain whose last unconquered world is the planet Earth.

August is a brilliant inventor who is afraid of the outside. Charlie is a crack pilot who isn't afraid of anything. Together these pals save lives every day. They also happen to be cats who pilot a powerful, mechanical dog suit! Always eager to leap into danger, this feline duo have their work cut out for them as they try to thwart Princess, an evil alien bent on enslaving mankind. Don't let the fact that Princess looks like a cute, diaper-wearing...